| ; RUN: llc %s -mtriple=x86_64-unknown-unknown -o - | FileCheck %s |
| |
| ; Generated with "clang -g -c -emit-llvm -S -O3" |
| |
| ; This will test several features of merging debug locations. Importantly, |
| ; locations with the same source line but different scopes should be merged to |
| ; a line zero location at the nearest common scope and inlining. The location |
| ; of the single call to "common" (the two calls are collapsed together by |
| ; BranchFolding) should be attributed to line 2 inside the wrapper inlined |
| ; scope within wrapper2 at line 0 inlined within f1 at line 13. |
| |
| ; void common(); |
| ; inline void wrapper() { common(); } |
| ; extern bool b; |
| ; void sink(); |
| ; inline void wrapper2() { |
| ; if (b) { |
| ; sink(); |
| ; wrapper(); |
| ; } else |
| ; wrapper(); |
| ; } |
| ; void f1() { wrapper2(); } |
| |
| ; Ensure there are two inlined_subroutine (for wrapper and wrapper2). |
| |
| ; CHECK: .loc 1 2 25 epilogue_begin |
| ; CHECK-NEXT: popq %rax |
| ; CHECK-NEXT: .Ltmp{{.*}}: |
| ; CHECK-NEXT: .cfi_def_cfa_offset 8 |
| ; CHECK-NEXT: .loc 1 2 25 is_stmt 0 |
| ; CHECK-NEXT: jmp _Z6commonv |
| ; CHECK-NEXT: [[LABEL:.*]]: |
| |
| ; CHECK: .section .debug_info |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NOT: {{DW_TAG\|End Of Children}} |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: {{DW_TAG\|End Of Children}} |
| ; CHECK: [[LABEL]]-{{.*}} DW_AT_high_pc |
| ; CHECK: .byte 13 # DW_AT_call_line |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK: .byte 0 # DW_AT_call_line |
| ; CHECK-NOT: DW_TAG |
| |
| |
| |
| @b = external dso_local local_unnamed_addr global i8, align 1 |
| |
| ; Function Attrs: uwtable |
| define dso_local void @_Z2f1v() local_unnamed_addr !dbg !7 { |
| entry: |
| %0 = load i8, ptr @b, align 1, !dbg !10, !tbaa !14, !range !18 |
| %tobool.i = icmp eq i8 %0, 0, !dbg !10 |
| br i1 %tobool.i, label %if.else.i, label %if.then.i, !dbg !19 |
| |
| if.then.i: ; preds = %entry |
| tail call void @_Z4sinkv(), !dbg !20 |
| tail call void @_Z6commonv(), !dbg !22 |
| br label %_Z8wrapper2v.exit, !dbg !25 |
| |
| if.else.i: ; preds = %entry |
| tail call void @_Z6commonv(), !dbg !26 |
| br label %_Z8wrapper2v.exit |
| |
| _Z8wrapper2v.exit: ; preds = %if.then.i, %if.else.i |
| ret void, !dbg !28 |
| } |
| |
| declare dso_local void @_Z4sinkv() local_unnamed_addr |
| |
| declare dso_local void @_Z6commonv() local_unnamed_addr |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 340559) (llvm/trunk 340572)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) |
| !1 = !DIFile(filename: "merge_loc.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 8.0.0 (trunk 340559) (llvm/trunk 340572)"} |
| !7 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 12, type: !8, isLocal: false, isDefinition: true, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{null} |
| !10 = !DILocation(line: 6, column: 7, scope: !11, inlinedAt: !13) |
| !11 = distinct !DILexicalBlock(scope: !12, file: !1, line: 6, column: 7) |
| !12 = distinct !DISubprogram(name: "wrapper2", linkageName: "_Z8wrapper2v", scope: !1, file: !1, line: 5, type: !8, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !13 = distinct !DILocation(line: 13, column: 3, scope: !7) |
| !14 = !{!15, !15, i64 0} |
| !15 = !{!"bool", !16, i64 0} |
| !16 = !{!"omnipotent char", !17, i64 0} |
| !17 = !{!"Simple C++ TBAA"} |
| !18 = !{i8 0, i8 2} |
| !19 = !DILocation(line: 6, column: 7, scope: !12, inlinedAt: !13) |
| !20 = !DILocation(line: 7, column: 5, scope: !21, inlinedAt: !13) |
| !21 = distinct !DILexicalBlock(scope: !11, file: !1, line: 6, column: 10) |
| !22 = !DILocation(line: 2, column: 25, scope: !23, inlinedAt: !24) |
| !23 = distinct !DISubprogram(name: "wrapper", linkageName: "_Z7wrapperv", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2) |
| !24 = distinct !DILocation(line: 8, column: 5, scope: !21, inlinedAt: !13) |
| !25 = !DILocation(line: 9, column: 3, scope: !21, inlinedAt: !13) |
| !26 = !DILocation(line: 2, column: 25, scope: !23, inlinedAt: !27) |
| !27 = distinct !DILocation(line: 10, column: 5, scope: !11, inlinedAt: !13) |
| !28 = !DILocation(line: 14, column: 1, scope: !7) |